The BBS was designed to work with Specialized Carbon OSBB frames, such as the Tarmac and Venge frames. Its pre-installed bearings are compatible with 24mm crankset spindles such as Shimano and FSA. It can be used with a SRAM GXP with the addition of our adapter kit (select SRAM crank above).
NOTE: If you wish to use a 30mm spindle in a Specialized Carbon OSBB frame you will need our BB30 Pressfit (BB30PF).
There are 3 different bearing choices to best meet your needs:
- Standard Bearings: Use for road bikes in dry/no salt environments.
- Full Stainless Steel Bearings: Use for extreme distance riding (>200miles/week), BMX, MTN, Cycle cross, and other varying conditions.
- Full Stainless Steel Bearings with CX Seals: The CX seal is for riding conditions where water, dust, and debris can get into the bearing and degrade it prematurely. Use for MTN, BMX, Cycle Cross, or other wet and dirty conditions. NOTE: This is not for timed road biking as the extra seal slightly increases wattage.
NOTE: If you have a Specialized Alloy frame, then you will need bottom brackets designed for BB30 frames. We offer BB30 bottom brackets for all crank sizes with our BB30 Assembly kit for 30mm spindles and our BB30.24 for 24mm spindles.
NOTE: For 22/24mm SRAM/Truvativ cranks you will need to select the SRAM option on the crank menu.
NOTE: For BMX cranks that use a 19mm spindle, road cranks with a 19mm spindle, and the FSA omega you will need our 19mm bushing kit which is sold separately.